• 대한토목학회논문집
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• 제33권4호
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• pp.1315-1326
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• 2013

하중에 민감한 케이블을 사용하는 현수교의 기하학적 형상은 하중을 저항할뿐만 아니라 시지각적 실루엣이 된다. 이 연구에서는 정력학적 도해법이 지니는 두 가지 가능성을 이용해서 힘의 흐름을 따르는 현수교의 초기 구조형태계획법을 제시한다. 첫째, 힘다각형을 이용해서 동일한 힘에 대해서 다양한 하중경로를 모색할 수 있다. 둘째, 구조형태와 힘다각형 사이에 존재하는 상반원리를 이용해서 새로 형성된 하중경로에 대응하는 구조형태를 생성할 수 있다. 먼저 현수교의 구조적 및 미학적 측면에 영향을 미치는 주요 구조형태변수를 선정한다. 이러한 변수에 대해서 구조형태와 힘다각형의 상호관계를 분석한다. 이를 토대로 현수교의 초기 구조형태계획에 대한 일련의 설계과정절차들을 개발한다. 이 연구에서 제시하는 구조형태계획법은 유사 형태저항 구조시스템의 설계대안을 생성하는데 수월하게 확장해서 사용할 수 있다. 또한 구조형태와 힘의 흐름과의 상호관계를 설명하는 교육용 도구로도 사용될 수 있을 것으로 기대한다.

• Architectural research
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• 제4권1호
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• pp.1-6
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• 2002

Every year new tall buildings are being conceived, designed, and built with new schemes. Thus it is important to explore the factors that affect tall building design. Thus it is important to explore the tall building design factors. The planning and design of tall buildings require different criteria than those that exist in regular size buildings. Tall buildings are uniquely expressed by their structural systems where exterior esthetic and requirements of space drive the form and composition of the structural systems. Therefore the exploration of design factors is the key to achieve optimum building systems. Optimization as mentioned here is associated with the efficiency of the different building systems. To achieve an optimal system, there is a need for an understanding of the factors that affect on overall tall building design such as planning module, building function, lease span, floor-to-floor-height, building height (aspect ratio), structural system, environmental systems. In this paper a statistical approach will be used and will be based on data collected from the practice through a rigorous survey taken. This information is tabulated and analyzed. The major target of investigation will be lease span related to space requirement in the tall building planning. Factors related to lease spans, such as function, floor-to-floor height, planning module, building height, overall plan dimension, and plan ratio (building geometry), will be looked at carefully. IN conclusion, this approach of optimization can introduce a preliminary design guideline for tall building projects. The purpose of the paper should shed some light on the optimum tall building design criteria.

• 한국소음진동공학회논문집
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• 제25권4호
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• pp.284-290
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• 2015

Road traffic noise is closely related with urban forms and urban components, such as population, building, traffic and land-use, etc. Hence, it is possible to minimize the noise exposure problem depending on how to plan new town or urban planning alteration. This paper provides ways to apply for urban planning in consideration of noise exposure through road traffic noise estimation for alteration of small-scale urban form. Spatial autoregressive model from the former study is used as statistical model for noise simulation. The simulation results by the spatial statistical model are compared with those by the engineering program-based modeling for 5 scenarios of small-scale urban form alteration. The error from the limitation of containing informations inside the grid cell and the difficulties of reflecting acoustic phenomena exists. Nevertheless, in the stage of preliminary design, the use of the statistical models that have been estimated well could be useful in time and economically.

• Architectural research
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• 제14권3호
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• pp.109-116
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• 2012

In order to shorten construction duration in high-rise project, construction company tried to make various system method toward simplifying construction method and shortening construction duration. Though high-rise tower-type residential project are growing, there are few case study. Then, the data for preliminary schedule planning in high-rise tower-type residential project are rare. This purpose of research shows construction method in structural work in high-rise tower-type residential project, suggests schedule planning in structural work through case studies. The structural work in high-rise tower-type residential project was divided 1) completion of form in lower part and 2) the typical floor under penthouse. The statistical analysis were done in two parts, the data from analysis were used in simulation. Finally, researcher confirmed the difference between real construction duration and the figure from simulation. The results shows that the more construction duration is long, the less ACS's cost is low. It means the effectiveness is increasing in ACS, if the floor number is high.

• Spatial Information Research
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• 제20권2호
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• pp.105-115
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• 2012

본 연구는 공간계획의 일환으로 도입된 지구단위계획의 수립과정을 중심으로 GIS에 기초한 증강현실기법의 도입가능성을 검토하는데 그 목적을 두고 있다. 이를 위하여 증강현실 기반의 도시계획 지원시스템을 구축하였고 현행 지구단위계획 내용 중 공간적인 성격이 강하여 증강현실기법의 적용이 가능한 부분들을 검토하였으며 성남 여수지구를 대상으로 지형현황분석, 용도지역 구분 및 기반시설 배치분석, 건축물 형태 및 배치분석, 건축물 용도 높이 건폐율 용적률 및 경관계획에 시범 적용함으로써 증강현실기법의 지구단위계획으로 적용 가능성을 모색하였다. 또한 지구단위계획 수립과정에서 증강현실기법 적용 효과를 기존 방법과 비교하는 방식으로 분석하여 증강현실기법 적용을 통한 지구단위계획 수립의 실효성 확보 가능성을 제시하였다.

• Journal of Construction Engineering and Project Management
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• 제2권3호
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• pp.1-7
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• 2012

The reconstruction of surfaces from unorganized point clouds can provide very useful information for construction managers. Although point clouds are generally created using 3D scanners, they can also be generated via the structure-from-motion technique using a sequence of images. Here we report a novel surface reconstruction technique for modeling and quantifying earthworks that can be used for preliminary planning, project updates and estimating of earthwork quantities, as well as embedded planning systems in construction equipment. The application of structure-from-motion techniques in earth works is examined and its advantages and limitations identified. Data from 23 earthwork excavation construction sites were collected and analyzed. 3D surface reconstructions during the construction phase were compared to the original land form. Similar experiments were conducted with piles of earth and the results analyzed to determine appropriate ranges of use for structure-from-motion surface reconstructions in earthwork applications. The technique was found to be most suited to pile of materials with volumes less than 2000 m3. Piles up to 10 m in height and with base areas up to $300m^2$ were also successfully reconstructed. These results should be of interest to contractors seeking to utilize new technology to optimize operational efficiency.

• Geomechanics and Engineering
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• 제13권3호
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• pp.475-488
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• 2017

Geotechnical data contributes substantially to the cost of engineering projects due to increasing cost of site investigations. Existing information in the form of soil maps can save considerable time and expenses while deciding the scope and extent of site exploration for a proposed project site. This paper presents spatial interpolation of data obtained from soil investigation reports of different construction sites and development of soil maps for geotechnical characterization of Multan area using ArcGIS. The subsurface conditions of the study area have been examined in terms of soil type and standard penetration resistance. The Inverse Distance Weighting method in the Spatial Analyst extension of ArcMap10 has been employed to develop zonation maps at different depths of the study area. Each depth level has been interpolated as a surface to create zonation maps for soil type and standard penetration resistance. Correlations have been presented based on linear regression of standard penetration resistance values with depth for quick estimation of strength and stiffness of soil during preliminary planning and design stage of a proposed project in the study area. Such information helps engineers to use data derived from nearby sites or sites of similar subsoils subjected to similar geological process to build a preliminary ground model for a new site. Moreover, reliable information on geometry and engineering properties of underground layers would make projects safer and economical.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2011년도 춘계 학술논문 발표대회 1부
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• pp.171-172
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• 2011

Formwork accounts for a large proportion of the framework in high-rise construction projects in terms of the duration and cost. Especially, slab formwork has a significant influence on these factors. However, the current selection of formwork method in general contractors depends on the decisions of few experienced engineers, and layout planning of the formwork in specialty contractors requires lots of time by different floor types. As a preliminary study for developing an optimum layout model in slab formwork of high-rise building construction, this study proposes the process of the optimum layout model and determines a fitness function for use of the genetic algorithm aimed at table formwork.

• 한국지하수토양환경학회지:지하수토양환경
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• 제27권spc호
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• pp.64-74
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• 2022

The conceptual site model (CSM) is used as a key tool to support decision making in risk based management of contaminated sites. In this work, CSM was applied in Jeonju Industrial Complex where site investigation for groundwater contamination was conducted. Site background information including facility types, physical conditions, contaminants spill history, receptor exposure, and ecological information were collected and cross-checked with tabulated checklist necessary for CSM application. The CSM for contaminants migration utilized DNAPL transport model and narrative CSMs were constructed for source to receptor pathway, ecological exposure route, and contaminants fate and transport in the form of a diagram or flowchart. The component and uncertainty of preliminary CSM were reviewed using the data gap analysis while taking into account the purpose of the survey and the site management stage at the time of the survey. Through this approach, the potential utility of CSM was demonstrated in the site management process, such as assessing site conditions and planning follow-up survey work.

• 감성과학
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• 제9권1호
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• pp.27-38
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• 2006

휴대전화 개발의 기획 단계에서 가장 중요한 고려사항 중 하나는 제품의 전략과 목적에 맞는 적절한 형태인자의 선정이며 현재까지는 주로 직관적이고 정성적인 방법을 사용하고 있다. 본 연구에서는 형태인자 선정의 체계적이고, 합리적 방안을 제시하고자, 감성 형용사를 이용하는 평가 방법론을 제안하였다. 우선 공리설계를 사용하여 개념적 형태인자를 검증하고, 검증된 형태인자의 설계파라미터에 감성형용사를 그룹핑 한다. 그 후 디자이너에게 선정된 형태인자와 그룹화된 감성형용사를 제시하면, 디자이너는 예비 디자인을 수행하고, 그 디자인은 설문조사를 통해 평가 및 분석된다. 이와 같은 일련의 프로세스의 적용결과, 공리설계와 감성공학(감성형용사)의 결합으로 제품의 목적에 적합한 형태인자 디자인을 선정할 수 있었으며 향후 휴대전화 개발에 있어 형태인자 이외의 중요 인자의 선정에도 확대 적용할 수 있는 가능성을 확인할 수 있었다.